package com.zhfy.game.screen.actor.framework; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.g2d.Batch; import com.badlogic.gdx.graphics.g2d.BitmapFont; import com.badlogic.gdx.graphics.g2d.GlyphLayout; import com.badlogic.gdx.graphics.g2d.TextureRegion; import com.badlogic.gdx.math.Rectangle; import com.badlogic.gdx.scenes.scene2d.InputEvent; import com.badlogic.gdx.scenes.scene2d.ui.Label; import com.badlogic.gdx.scenes.scene2d.utils.ActorGestureListener; import com.badlogic.gdx.utils.Align; import com.badlogic.gdx.utils.Array; /** * * * 可以滚动的文本 * * @author haocao * */ public class ScrollLabel extends BaseActor { private Label label; // 滚动偏移量，左下角为(0,0) private float scrollY; public TextureRegion background; private float textHeight; private int align; public void setTextHeight(String text){ GlyphLayout glyphLayout = new GlyphLayout(); glyphLayout.setText(label.getStyle().font, text, Color.WHITE, getWidth(), Align.topLeft, true); textHeight= glyphLayout.height*label.getFontScaleY(); } public void resetTextHeight(){ // GlyphLayout glyphLayout = new GlyphLayout(); // glyphLayout.setText(label.getStyle().font, label.getText(), Color.WHITE, label.getWidth(),align, true); // float s1=glyphLayout.height;//1137.1995 // float s2=label.getStyle().font.getCapHeight();//14 // float s3=label.getStyle().font.getXHeight();//11 // textHeight=s1*label.getFontScaleY()* (s2/s3);; //textHeight= glyphLayout.height*label.getFontScaleY()* (label.getStyle().font.getCapHeight()/label.getStyle().font.getXHeight()); resetScrollYPotion(); label.setAlignment(align); textHeight=label.getPrefHeight(); if(textHeight<getHeight()){ label.setAlignment(Align.center,label.getLineAlign()); } } public ScrollLabel(TextureRegion background, BitmapFont font, Color textColor, String text) { this.background = background; label = new Label(text, new Label.LabelStyle(font, Color.WHITE)); label.setWrap(true); align=Align.topLeft; label.setAlignment(Align.topLeft); setText(text); setTextColor(textColor); //GlyphLayout glyphLayout = new GlyphLayout(); // glyphLayout.setText(label.getStyle().font, label.getText(), Color.WHITE, getWidth(), Align.topLeft, true); //textHeight= glyphLayout.height*label.getFontScaleY(); resetTextHeight(); addListener(new ActorGestureListener() { @Override public void pan (InputEvent event, float x, float y, float deltaX, float deltaY) { scrollY(deltaY); } @Override public void touchUp (InputEvent event, float x, float y, int pointer, int button) { } }); } public void drawAfterBg (Batch batch) { //背景 if (background != null) { //scrollLabelStyle.background.draw(batch, getX(), getY(), getWidth(), getHeight()); batch.draw(background,getX(), getY(), getWidth(), getHeight()); } // 设置裁剪区域 if (getClipRectangleArr().size == 0) { addClipRectangle(new Rectangle(0, 0, getWidth(), getHeight())); } label.setPosition(getX(), getY() + scrollY); label.setWidth(getWidth() ); label.setHeight(getHeight()); label.draw(batch, 1); Color color = getColor(); batch.setColor(color.r, color.g, color.b, color.a * 0.8f); } public void setText (String text) { label.setText(text); } public void setTextColor (Color textColor) { label.setColor(textColor); } public void scrollY (float value) { float temp = textHeight- getHeight(); if (temp <= 0) { return; } scrollY += value; // 边界检测 if (scrollY > temp) { scrollY = temp; } if (scrollY < 0) { scrollY = 0; } // Gdx.app.log("scrollY",scrollY+""); } public Label getLabel () { return label; } public void setFontScale(float scale) { label.setFontScale(scale); } public void setWidth (float width) { if (getWidth() != width) { super.setWidth(width); sizeChanged(); label.setWidth(width); //label.pack(); } } public void setHeight (float height) { if (getHeight() != height) { super.setHeight(height); sizeChanged(); } } public void resetScrollYPotion(){ scrollY=0; } public void setPosition (float x, float y) { if (getX()!= x || getY() != y) { setX(x); setY(y); positionChanged(); label.setPosition(x,y); } } public void setDebug(Boolean b){ super.setDebug(b); label.setDebug(b); } public void setWrap(boolean b) { label.setWrap(b); } public void setAlignment(int bottomLeft, int left) { label.setAlignment(bottomLeft,left); this.align=label.getLabelAlign(); } public void setAlignment(String align) { if(align.equals("bottomLeft")){ label.setAlignment(Align.bottomLeft); }else if(align.equals("bottom")){ label.setAlignment(Align.bottom); }else if(align.equals("center")){ //label.setAlignment(Align.center); label.setAlignment(Align.top,Align.center); }else if(align.equals("bottomLeft")){ label.setAlignment(Align.bottomLeft); }else if(align.equals("right")){ label.setAlignment(Align.right); }else if(align.equals("bottomRight")){ label.setAlignment(Align.bottomRight); }else if(align.equals("left")){ label.setAlignment(Align.left); }else if(align.equals("top")){ label.setAlignment(Align.top); }else if(align.equals("topLeft")){ label.setAlignment(Align.topLeft); }else if(align.equals("topRight")){ label.setAlignment(Align.topRight); }/*else if(align.equals("topCenter")){ label.setAlignment(Align.top,Align.center); }*/ this.align=label.getLabelAlign(); } private Array<Rectangle> clipRectangleArr = new Array<Rectangle>(); public Array<Rectangle> getClipRectangleArr () { return clipRectangleArr; } /** * 添加裁剪矩形，范围为当前Actor的显示区域即：(0,0)~(w,h) 原点为左下角 * @param rectangle */ public void addClipRectangle (Rectangle rectangle) { clipRectangleArr.add(rectangle); } @Override public void draw (Batch batch, float parentAlpha) { if (clipRectangleArr.size > 0) { for (Rectangle cRectangle : clipRectangleArr) { this.drawCore(batch, parentAlpha, cRectangle); } } else { this.drawCore(batch, parentAlpha, null); } } /** * 核心绘制 * @param batch * @param parentAlpha * @param clipRectangle */ private void drawCore (Batch batch, float parentAlpha, Rectangle clipRectangle) { boolean clipok = false; // 开始裁剪 if (clipRectangle != null) { batch.flush(); // 绘制之前添加的元素，如果不添加此处代码，后面的裁剪会导致之前的纹理也会被裁剪 clipok = clipBegin(getX() + clipRectangle.x, getY() + clipRectangle.y, clipRectangle.width, clipRectangle.height); } Color color = getColor(); batch.setColor(color.r, color.g, color.b, color.a); float x = getX(); float y = getY(); float scaleX = getScaleX(); float scaleY = getScaleY(); float width = getWidth(); float height = getHeight(); // 绘制完背景后进行其他内容绘制 drawAfterBg(batch); // 提交裁剪内容 if (clipok) { batch.flush(); clipEnd(); } } }
//初始化方法
ScrollLabel scrollLabel =GameUtil.initCHScrollLabel(mainGame,font,text,color, labelEs.get(l),stageW,stageH);
this.addActor(scrollLabel);
label=scrollLabel.getLabel();
scrollLabel.setName("scrollLabel_"+labelEs.get(l).getInt("id"));
//初始化 public static ScrollLabel initCHScrollLabel(MainGame game, BitmapFont font, String text, Color color, Element labelE, float uiStageWidth, float uiStageHeight) { ScrollLabel scrollLabel = new ScrollLabel( game.getImgLists().getTextureByName(labelE.get("scrollBg")).getTextureRegion(), font, color, text); if (labelE.getFloat("scale") != 0) { scrollLabel.getLabel().setFontScale(labelE.getFloat("scale")); } float w=labelE.getFloat("w",0); float h=labelE.getFloat("h",0); if(h!=0){ scrollLabel.setHeight(h * uiStageHeight / 100); } if(w!=0){ scrollLabel.setWidth(w * uiStageWidth / 100); scrollLabel.setWrap(true); scrollLabel.setAlignment(Align.bottomLeft,Align.left); } scrollLabel.setAlignment(labelE.get("align")); scrollLabel.setPosition( GameUtil.getButtonPotionXByView(labelE, uiStageWidth, scrollLabel.getWidth()) + labelE.getInt("refx", 0), GameUtil.getButtonPotionYByView(labelE, uiStageWidth, uiStageHeight, scrollLabel.getWidth(), scrollLabel.getHeight()) + labelE.getInt("refy", 0)); //scrollLabel.setDebug(true); return scrollLabel; } //element信息 <label id="1" x="50" y="50" w="50" h="30" scale="0.6" ifBorder="true" text="event content" color="DARK_GRAY" font="textFont" align="center" ifVisible="true" remark="内容" refx="0" refy="-3" isScroll="true" scrollBg="colorBlock_0" /> //赋值方法 public void setScrollLabel(int labelId,String value){ XmlReader.Element labelE=null; Array<XmlReader.Element> labelEs = groupE.getChildByName("labels").getChildrenByNameRecursively("label"); // 递归遍历，否则的话返回null for (int lE=0,lMax=labelEs.size;lE<lMax;lE++) { if(labelEs.get(lE).getInt("id")==labelId){ labelE=labelEs.get(lE); break; } } if(labelE!=null){ if(labelE.getBoolean("isScroll",false)){ ScrollLabel scrollLabel=findActor("scrollLabel_"+labelE.getInt("id")); setLabelText(labelId,value,true); if(scrollLabel!=null){ scrollLabel.resetTextHeight(); } }else{ setLabelText(labelId,value,true); } }else{ setLabelText(labelId,value,true); } }
参考CH框架的可拖动label写的,效果如图
未超过行时的显示:
超过行的显示:
